Showing 1 - 6 results of 6 for search 'Ewan, Herbert G (Herbert George), 1929-', query time: 0.45s Refine Results
  1. 1
    The Saratoga spittlebug : a destructive pest in red pine plantations /

    Government Document Book
  2. 2
    A method for measuring the insect population on trees 6 to 12 feet tall /

    Government Document Book
  3. 3
    The poplar borer in relation to aspen stocking /

    Government Document Book
  4. 4
    Some effects of temperature extremes on Saratoga spittlebug populations /

    Government Document Book
  5. 5
    Identification of hardwood insects by type of tree injury, north-central region /

    Government Document Book
  6. 6
    The forest insect situation, Lake States 1955 /
    by Beckwith, L. C
    Published 1956
    Other Authors: “...Ewan, Herbert G (Herbert George), 1929-...”

    Government Document Book
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